Safety elevator device.



J. BALAZS.

SAFETY ELEVATOB DEVICE.

PrLIuA'rIoN FILED H1115, 1911,

1,023.7 1 1 Patented Apr. 16, 1912.

j `2 SHEETS-SHEET 1.

EMU

W/TNESSES: NVENTOR.

/A TTORNEYS J. BALAZS.

SAFETY ELBVATOR DEVICE.

ArPLmATmN FILED M1125, 1911.

1,023,71 1 Panam-,ed Apr. 16, 1912.

2 SHEETS-SHEET 2.

P793 fig. 4 i755 WHA/195555,- /N VEN TOR. /igm BY .fg/,mf 344/726 UNITEDSTATES PATENT OFFICE.

JOHN BALAZS, OF MICHEL, BRITISH COLUMBIA, CANADA, ASSIGNOR 0F ONE-FOURTHT0 UNOKA. MIHALJ, ONE-FOURTH TO MANDI BALINT, AND ONE-FOURTH T0 G.

HEKKEL, ALL 0F MICHEL, CANADA.

SAFETY ELEVATOR- DEVICE.

To all zrllomit may concern.'

Be it known that I, JOHN Rimas, a subject of the King of Hungary,residing at. Michel, Province of British Columbia., and Dominion ofCanada, have invented. certain new and useful Improvements in SafetyElevator Devices, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to a safety elevator device, and the primaryobject of my invention is to provide an elevator with positive andreliable means, in a manner as will be hereinafter set forth, forpreventing the sudden descent of an elevator cage, should the hoistingcables thereof break.

further object of the invention is to provide a safety elevator devicewith novel spring pressed gripping shoes that are released when thehoisting cable breaks to grip the guide or side rails of the elevatorshaft or well.

These and such other objects as may hereinafter appear are attained bythe novel construction, combination and arrangement of parts to behereinafter specifically described and then claimed.

Reference will now be had to the drawings, wherein like numerals ofreference denote corresponding parts throughout the several views, inwhich Figure 1 is a front elevation of the elevator safety device asapplied to an elevator cage, the cage being partly broken away andpartly in section, Fig. 2 is a bottom plan of a portion of the same,Fig. 3 is an enlarged front elevation of a detached gripping shoe, Fig.4 is an elevation of one side of the saine, Fig. 5 is an elevation ofthe opposite side of the same, Fig. 6 is a plan of the gripping shoe,Fig. 7 is a front elevation of a` guide rail of the elevator shaft, andFig. S is a side elevation of the same.

The reference numerals 1 denote the vertical guide rails of an elevatorshaft, these rails being preferably made of T-bars with the lateralflanges 3 thereof provided with equally spaced openings 4.

Slidably mounted between the guide rails 1 is a cage, comprising a floor5, a roof 6 and walls 7, the ioor 5 and the roof 6 being connected byvertical channels 8 that guide the elevator cage between the guide rails1.

Mounted upon the roof 6, adjacent to the Specification of LettersPatent.

Application tiled April 25, 1911.

Patented Apr. 16, 1912.

Serial No, 623,158.

upper ends of the channel bars 8, are the bearings 9 of revolublegrooved sheaves 10.

Mounted upon the bottom of the floor 5, adjacent to the lower ends ofthe channels 8, are the bearings 11 of revoluble grooved sheaves 1Q.

Pivotally mounted upon the journal pins 13 of the bearings 11 aregripping shoes identical in construction. Each shoe comprises a body 14having vertical apertured lugs 15 adapted to receive the pins 13. Thebody 14 is provided with two guide lugs 16 upon one side thereof, theselugs being arranged in parallelism to extend along the sides of theguide rails 1. The opposite side of the body 14 is provided with twolateral extensions 17 having spring sockets 18. Adapted to engage inthese sockets are the lower eonvolutions of coiled compression springs19 having the upper convolutions thereof extending into the sockets 20,carried by the under side of the floor 5. The body 14 is recessed, as at21 and provided with a transverse bolt 22, for a purpose that willpresently appear. The lower end of the body 14 is bifurcated to form twocurved gripping arms 23 having heads 24 adapted to engage in theopenings 4 iof the guide rails 1. Cables Q5 are connected at one end tothe bolts Q2, these cables crossing beneath the floor 5, passing overthe sheaves 12 upwardly through the channel bars 8 and over the sheaves10. The other ends of the cables 25 pass under pins 2G, carried by aconnector 27 and are connected to hoisting cables 28. The connector Q7retains the ends of the cables Q5 centrally of the roof 6 whereby theweight of the elevator cage will be equally distributed. Then thehoisting cables Q8 break, the cables 25 are released sufficiently toallow the springs 19 to force the heads 24 of the gripping arms 23 intothe openings 4 of the guide rails 1, thereby holding the elevator cagein the shaft Q until the hoisting cables have been repaired.

lWhat I claim is In an elevator safety device, the combination withguide rails provided with openings, and a cage slidably arranged betweensaid rails, and hoisting cables for said cage, of sheaves carried by theroof of said cage, sheaves carried by the under side of the floor ofsaid cage, shoes pivotally connected to the under side of the bottom ofvpression springs arranged between said lateral extensions und the floorof said cage, a bolt carried by said body, gripping arms carried by saidbody and having the lower y ends lthereof provided With heads adapted toengage in the openings of said guide rails, und cables attached to thebolts of said shoes and crossing beneath the door of seid cage, saidcables passing upwardly over the sheaves of said cage and connected tothe hoisting cables of said cage, substantially as described.

In testimony whereof I aiix my signature in the presence of twowitnesses.

J CHN BALAZS. Vitnesses:

MIKE UNoKA, LoUis AUZEL.

Copies of this patent may be obtained for ve cents cach, by addressingthe Commissioner of atents,

Washington, D. C.

